Gas burner



G. F. REZNOFZ & 2 9 1 aw 2 w GAS BURNER F1 led March IN V EN TOR.

Patented Nov. 25, 1924.

GEORGE FOSTER REZNOR, OF MERCER, PENNSYLVANIA.

GAS BURNER.

Application filed March 15, 1923. Serial No. 625,209.

1 0 all whom it may concern:

Be it known that I, Gnonen Fos'rnn REZ- NOR, a citizen of the UnitedStates, residing at Mercer, in the county of Mercer and State ofPennsylvania, have invented new and use ful Improvements inGas Burners,of which the following is a specification.

My invention. relates to gas-burners and the object thereof is toprovide such burners with agitatable grids or screens for preventingback-firing from the burner-tips into the mixers. I place between theburnertips and the mixer a grid or screen through which. all the gasmust pass on its way to the burner-tips, and provide means whereby thegrid or screen may be reversed or turned over so that any impuritieswhich have lodged therein may be readily driven by the gas through theburner-tips but in the reverse direction from that by which theimpurities entered the same. The grid or screen may be jarred whenreversed or turned in order to loosen the impurities so that theoutgoing gas will more easily dislodge the impurities and carry themthrough the burnertips.

Referring to the accompanying drawing, Fig. 1 is a side view of a burnerequipped with my invention, a portion being broken away; Fig. 2, an endelevation of Fig. 1 complete; Fig. 3, a cross section of Fig. 1 on theline III-III; Fig. 1, a plan view of Fig. 1 with the cover memberremoved.

On the drawing, 1 designates the manifold chamber of a multiple-tipgas-burner, and 2, the mixing chamber which receives air and gas at oneend and delivers them mixed to the chamber 1 in a manner well known.

, The member 1 has the cover member 3 which is provided on its upperside with a series of burner-tips or openings 4:.

At or near the lower side of the cover member 3 is the axiallyrotatableshaft 5 centrally arranged below the burner-th s and mounted in the endsof the chamber 1.. To the shaft is secured in any suitable manner ascreen, which I have shown comprising a strip of tine-mesh wire netting6 held in a frame of sheet-metal provided with openings 7, The frame hasits longitudinal center in the plane of the axial center of the shaft 5.The shaft and screen rotate or oscillate in the longitudinal opening orpassage 8 connecting the interior of the cover member 3 with thatportion of the chamber 1 which is below the screen. The edges of thescreen substantially lit the sides and ends of the opening 8, no matterwhich side of the screen is up; at least, the sides and ends of thescreen and the opening are so close together when the sides of thescreen are at right angles to the direction of travel of the gastherethrough, as to prevent the passage of enough ga to causeback-firing.

In order to ensure that the screen will always lie squarely across theopening 8, as shown in full and dotted lines in Fig. 3, I provide theshaft with the crank or arm 9 adapted to engage the stop or block 10.The block is arranged so that the shaft 5 lies across the center of theface of the same with the arm 9 adapted to rest on the said face whenthe screen is seated in the opening 8 as shown in the drawing.

A lever 11 is pivoted on the pin 12 below the shaft 5 and has its lowerend pivoted to the operating rod 13. The upper end of the lever has alongitudinal slot 1 1 in which the crank pin 15 on the outer end of thearm 9 is slidable as the lever is operated by the rod 13. A contractilespring 16 is connected to the pins 12 and 15. The spring not only seatsthe arm 9 on the block 10, but it ensures the throw of the shaft 5 ineither direction as soon as the pin 15 has passed the dead centerposition with respect to the shaft 5 and the pin 12. The screen can bejarred by hand to loosen the dirt therein, or it can be jarred byreleasing the arm 9 as soon as it passes the dead center or at any otherline, the spring causing the arm to engage the stop with sufficientforce to loosen the dirt in the screen.

The word screen is to be taken in the broad sense of including grid andperforated sheet-metal, that is, devices having elongated or round gaspassages.

I claim- 1. A gas burner, a mixer tl'ierefor, a screen between the twooositioned to cause the to pass through the same to the burner, andmeans for agitating the screen to dislodge matter trapped thereby.

2. A gas burner, a mixer therefor, and a screen arranged across anopening between the burner and the mixer to prevent backfiring, andreversible to facilitate the dislodgement of matter trapped by thescreen.

3. A gas burner, a mixer therefor, a screen movable to two positions, ateach of which the gaspasses from the mixer through the screen to theburner, and means ensuring that the screen shall return to one of -thepocausing the screen to move to a second of said positions after it hasbeen moved a predetermined distance from its starting position.

5. A gas burner, a mixer therefor, a screen 7 movable to two positions,at each of which the gas passes from the mixer to the burner, arotatable shaft supporting the screen, an

arm carried by the shaft, and a stop arranged to be engaged by the armwhen the screen is in either position.

6. A gas burner, a mixer therefor, a screen movable to two positions, ateach of which the gas passes from the mixer through the screen to theburner, a rotatable shaft supporting the screen,'an arm carried by theshaft, a stop arranged to be engaged by the arm when the screen is ineither position and a spring for moving the screen to one position afterit has been moved from either position and then released.

In testimony whereof I hereunto aflix my signature this 10th day ofMarch, 1923,

GEORGE FOSTER REZNOR.

